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• 13:15

### Math Antics - Absolute Value

60 views / 0 likes - added

Learn More at mathantics.comVisit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 12:32

### Protecting Privacy with MATH (Collab with the Census)

39 views / 0 likes - added

This video was made in collaboration with the US Census Bureau and fact-checked by Census Bureau scientists. Any opinions and errors are my own. For more information, visit https://census.gov/about/policies/privacy/statistical_safeguards.html or search "d

• 02:34

### Using Math to Skate On Thin Ice

39 views / 0 likes - added

People get nervous when they see Mrten Ajne ice skating. He intentionally skates on extremely thin ice. Ajne has pursued this dangerous hobby for 40 years and has skated on more than 1,800 bodies of water from Norway to North America. He uses his knowledg

• 11:28

### Math Antics - Basic Probability

65 views / 0 likes - added

This is a re-upload to correct some terminology.In the previous version we suggested that the terms odds and probability could be used interchangeably. While this may be okay in casual conversation (since both have to do with the likelihood of an event),

• 06:51

### Math Genius Computes in the Blink of an Eye

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Math Genius Computes in Blink of an Eye from the 20/20 "SuperHumans!" special.

• 13:58

### Ant On A Rubber Rope Paradox

61 views / 0 likes - added

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMPLEASE SUBSCRIBE TO MY PODCAST: https://bit.ly/2BCLhoKCuriosity Box: https://www.curiositybox.com/*********** LINKS *************The Create Unknown Podca

• 12:25

### Five Creative Approaches to Math and Science

50 views / 0 likes - added

Were introducing you to some brilliant minds working origami, kites, rapping and a web-slinging superhero into the study of math and science in this reel. Plus, were touring an ultra-modern concert hall where music and science come together in the most ac

• 10:15

### The Pillowcase of Terror | Math Magic

115 views / 0 likes - added

LINKS:More about the trick: https://www.riddleministry.com/riddles/cards-in-the-dark/1333/Mismag822's tutorial and demonstration: https://www.youtube.com/watch?v=VaNCbEduGm0Subscribe to quarterly deliveries of my favorite science+math toys: https://www.cu

• 14:28

### Math Antics - Scientific Notation

88 views / 0 likes - added

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 10:58

### Math in the Simpsons: Apu's paradox

68 views / 0 likes - added

Apu attends a math lecture at MIT which features an amazing calculation. Apu does not get it and neither did 99.99% of the people watching the episode. In this video the Mathologer tells you everything nobody ever wanted to know about this mystery blackbo

• 08:41

### Math in the Simpsons: Homer's theorem

60 views / 0 likes - added

After putting on some glasses he found in a toilet Homer feels very smart and declares: "The sum of the square root of any two sides of an iscosceles triangle is equal to the square root of the remaining side." Well, sounds like Pythagoras theorem but it'

• 02:46

### A Basic Explanation on Why (Almost) All Tortoiseshell Cats Are Female - with Walter Bodmer

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Tortoiseshell cats almost all female because the genes coding for fur colour are on the X chromosomes - the black fur gene on one and the orange one on the other. In each cell, only one X chromosome is activated, giving a patchwork pattern. Subscribe for

• 13:59

### Blippi Visits an Ice Cream Truck | Math and Simple Addition for Children

187 views / 1 likes - added

Blippi visits an ice cream truck and learns numbers for children. Learn math and simple addition with ice cream bars and snacks with Blippi. See inside the ice cream truck with Blippi in his educational videos for children. This Blippi video has a Blippi

• 11:09

### Math Antics - Exponents and Square Roots

108 views / 0 likes - added

This is a re-upload. It contains only minor changes to terminology. To learn more about Math Antics, visit www.mathantics.com

• 13:46

### Algebra Basics: Laws Of Exponents - Math Antics

94 views / 0 likes - added

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 12:05

### Twin paradox: the real explanation (no math)

61 views / 0 likes - added

The Twin Paradox is the most famous of all of the seeming-inconsistencies of special relativity. In this video, Fermilab’s Dr. Don Lincoln explains it without using mathematics. This is a companion video for his earlier one in which the same question was

• 03:40

### Can Math Save You from Quicksand? | NUMBER CRUSHERS

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Can Math Save You from Quicksand? Can you think on your feet fast enough to solve this math puzzler? Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what happens

• 02:36

### Sesame Street: Chaka Khan Sings about Faces with Elmo and Telly

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Your face is unique! Sing along as Chaka Khan sings about all the wonderful things your face can do like help you share emotions! -- Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun

• 13:56

### Math Antics - Units of Distance

162 views / 0 likes - added

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 03:33

### 50 People Try to Make Scrambled Eggs | Basic Skills Challenge | Epicurious

157 views / 0 likes - added

Even people who can't cook can make scrambled eggs, right? Sure. But here we're going to show you how to make them delicious. Like the knives you see in this video? Grab your own set at Bed, Bath, and Beyond - https://www.bedbathandbeyond.com/store/brand/

• 02:53

### Travel Deep Inside a Leaf | California Academy of Sciences

109 views / 1 likes - added

Take a journey inside a leaf of a redwood tree. Enter the stoma and view photosynthesis on a molecular level, knowing that the animation prioritizes scientific accuracy. Educators might also be interested in an annotated version of this video: https://you

• 14:07

### 10 MATH TRICKS THAT WILL EMBARRASS YOUR TEACHER

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INCREDIBLY COOL MATH TRICKS FOR KIDS This video is dedicated to all those people who think that math was boring. Today, we are here to prove the opposite! In this video, we collected the coolest math tricks for all ages. It doesn't matter if you're 6 or 6

• 20:59

### Ancient Rome in 20 minutes

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Caesar, The Colosseum, Republic, Nero, geese, plebeians, legions — everything that you once knew, but forgot, in a crash course video by Arzamas. Narrated by Brian Cox. "Ancient Rome in 20 minutes" is an English version of a Russian video by Arzamas

• 17:38

### Ancient Greece in 18 minutes

214 views / 3 likes - added

Homer, The Minotaur, 300 spartans, Greek theatre, Parthenon, democracy — everything that you once knew, but forgot, in a crash course video by Arzamas. Narrated by Brian Cox. "Ancient Greece in 18 minutes" is an English version of a Russian video by

• 16:34

### 18 EASY WAYS TO TEACH MATH TO CHILDREN

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TEACHING BASIC MATH TO KIDS We know many ways to keep toddlers entertained. Today we are here to prove that math can be fun! It's important not only to keep them happy and excited but also to educate and develop them. There are many basic skills to train

• 14:48

### 28 SIMPLE STUDY TRICKS THAT WILL COMPLETELY CHANGE YOUR LIFE

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FANTASTIC STUDY HACKS AND IDEAS School can be real fun, especially if you just learn a couple of our awesome ideas and life hacks. I promise, our amazing school crafts can help to make your studies even brighter and smarter. You'll learn how to cope with

• 02:09

### What is a fractal? A lens to infinity

220 views / 0 likes - added

A fractal pattern is a kind of equation occurring all around us in nature. So what's a fractal and what does it have to do with nautiluses, romanesco broccoli, Star Trek II: The Wrath of Khan, peacocks, and predicting diseases? SUBSCRIBE! for more Popular

• 08:51

### The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

237 views / 0 likes - added

They say only geniuses can solve this puzzle, and this time they are correct. Thanks to all patrons! Special thanks to: Shrihari Puranik Yildiz Kabaran Kyle My blog post for this video https://wp.me/p6aMk-82U Sources https://puzzling.stackexchange.com/que

• 01:42

### How To Use Rounding in Math Problems

473 views / 0 likes - added

How To Use Rounding in Math Problems. Part of the series: Math Problems. In certain math problems rounding may actually make finding a solution easier and more clear. Use rounding in math problems with help from a mathematics educator in this free video c

• 10:51

### Math Antics - Intro to the Metric System

486 views / 0 likes - added

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 05:52

### Can You Solve The "MEANEST" SAT Test Question Ever?

272 views / 0 likes - added

On the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly. S

• 02:32

### The Similarity Trap

244 views / 0 likes - added

Try Squarespace for free: http://squarespace.com/MinuteEarth And subscribe to MinuteEarth! http://goo.gl/EpIDGd As we try to figure out the evolutionary trees for languages and species, we sometimes get led astray by similar but unrelated words and traits

• 02:33

### The Man Behind Khanacademy - Salman Amin Khan

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The story of Salman Amin Khan. The faculty of Khanacademy!

• 02:18

### DIY | Burrito Math | Cartoon Network

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Jack dreams of making the mathematically perfect burrito but when he tries to do it the easy way, using his sassy robo pal Mitchell, everything gets really gross. Earn the Mathematician patch from DIY.org! https://diy.org/skills/mathematician From DIY.org

• 02:43

### The Man Teaching Math Lessons in the Sky

108 views / 0 likes - added

Winfred Randolph Lowe, aka, “Randy the Kite Man,” is a retired math teacher taking geometry to new heights. For the past 20 years, Winfred has spent his free time flying kites. Now he’s combining his two favorite pastimes to teach the fundamentals of geom

• 07:18

### 9 SPEEDY MATH TRICKS FOR SCHOOL

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If you have issues with math, it’s not really your fault. The problem is that nobody taught you the most useful math tricks in school. But here they are! No calculators, just your hands and some simple tricks - watch and learn! ---------------------------

• 11:11

### THAT IS HOW YOU CAN CONFUSE YOUR MATH TEACHER AT SCHOOL

263 views / 0 likes - added

Learn how to draw prospective without a ruler, measure angles and figure out how many days there are in any given month with your hand! These and many others mind-blowing Math tricks are in this video! There are some GREAT tricks for young mathematicians!

• 01:51

### How Captain America's Shield Follows Basic Physics

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Captain America's shield follows the law of elastic collisions. This means that whenever the shield hits an object, its speed does not change. It would be impossible for the average human to control a shield like this, but because Captain America is a sup

• 13:25

### 19 BRAIN TEASERS THAT WILL INCREASE YOUR IQ LEVEL

307 views / 0 likes - added

These 19 cool brain teasers and optical illusion will help you increase your IQ one level up: 00:14 - Mystery riddle to test your ability to think in dangerous situation. 01:23 - Logic test - Math riddle. An easy riddle to test your perception and even ma

• 13:55

### 18 MATH RIDDLES THAT EVEN YOUR MATH TEACHER WILL FAIL

510 views / 1 likes - added

A great chance to challenge your math teacher! These 18 math riddles will trick and will make sweat even your math teacher: 00:14 - Easy riddle to warm you up for the main brain workout. Kids solve this in seconds! 00:46 - Riddle to test your ability to t

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• 14:31

### BEST Guess Who Strategy- 96% WIN record using MATH

151 views / 0 likes - added

Here is a strategy for winning 96% of your competitive Guess Who games. Now all you need is a time machine to return to 1991 and CRUSH Jeff Lee in the 5th grade Guess Who Championships. FREE trial for Lynda.com- http://bit.ly/LyndaMarkRober MUSIC- 0:21- M

• 17:32

### The Math (and money) of Soccer Stickers - Numberphile

151 views / 0 likes - added

Check out Brilliant (and get 20% off) by clicking https://brilliant.org/numberphile Featuring Federico Ardila --- More links & stuff in full description below ↓↓↓ Extra footage (the 'beautiful math' bit): https://youtu.be/iMSitUaoS3I Extra footage (some f

• 13:54

### 16 Math Riddles And Logic Puzzles That Will Crack Your Mind Wide Open

610 views / 0 likes - added

These math riddles and logic puzzles will either crack your mind wide open or will boost your IQ! (Hopefully, the latter) 00:14 - Just a nice warm-up before the main brain workout! To crack this easy riddle you need to pay attention to every item on the t

• 13:17

### Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist

219 views / 0 likes - added

The probability that at least 2 people in a room of 30 share the same birthday. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/probability-and-combinatorics-topic/probability_combinatorics/e/probab

• 04:34

### OK Go Sandbox - One Moment of Math

362 views / 2 likes - added

Damian Kulash, lead singer of OK Go, discusses the immense amount of math behind their video,”The One Moment”. This video is part of www.OKGoSandbox.org

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• 08:00

### 15 BRILLIANT MATH TRICKS THEY DON'T TEACH YOU AT SCHOOL

349 views / 1 likes - added

Too bad they don't teach you this at school! But I always got you! So check out these genius Math tricks and have fun! ;) ---------------------------------------------------------------------------------------- 5-Minute Crafts: https://www.goo.gl/8JVmuC F

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• 09:13

### Math Antics - Subtracting Mixed Numbers

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• 03:12

### Science Artist Uses Math to Make Sculptures

209 views / 0 likes - added

John Muntean has been creating magic angle sculptures since 1986. At first, the sculpture just looks like an abstract piece. When rotated at the magic angle and lit from above, a three-part masterpiece emerges. See more from John Muntean: https://www.jvmu

• 15:17

### 35 BASIC KITCHEN TIPS FOR KIDS

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Are you going to have a home party? Surprise all your friends with super yummy and tasty-looking ice-cream cupcakes, milkshakes and lolipops! Also find out an easy way to check if your eggs for breakfast are fresh or not! Enjoy! Subscribe to 5-Minute Craf

• 02:13

### Crazy Math Trick: I will guess Your Age! (OLD 2016 version)

296 views / 0 likes - added

Check here for the 2017 version: https://www.youtube.com/watch?v=PQjNF34H3Bs&feature=youtu.be ★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You

• 04:01

### Product rule - Calculus derivatives tutorial

168 views / 0 likes - added

Learn how to take the derivative of a function using the product rule. This complete calculus derivatives tutorial explains why and how to use the product rule. To see all my calculus videos check out my website http://MathMeeting.com My name is Chris and

• 04:28

### Product rule - Logarithm derivatives example

173 views / 0 likes - added

Learn calculus with this product rule Derivative example with logarithms and exponential functions. This complete calculus derivatives tutorial explains why and how to use the product rule. To see all my calculus videos check out my website http://MathMee

• 11:09

### 15 GENIUS MATH TRICKS THAT ARE ACTUALLY EASY

370 views / 0 likes - added

How to embarrass your teacher. Smart and simple backs to school math hacks and tricks. Learn how to multiply fast in your head. Subscribe to 5-Minute Crafts KIDS: https://goo.gl/PEuLVt ----------------------------------------------------------------------

• 01:52

### Three Solutions! Can You Find Them? (math trick with answers)

231 views / 0 likes - added

★★ Please LIKE if you found at least ONE solution!! ★★ This is an impossible equation, because 6+4 is clearly not 4... BUT there are three solutions to this equation by moving just ONE matchstick. Can you find all three solutions? I am curious to see how

• 02:13

### Crazy Math Trick: I will guess Your Age! (2017 with answers)

348 views / 3 likes - added

★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You start with a RANDOM number and then end up with your Age and that number... pretty incredible

• 09:04

### Math Antics - Adding Mixed Numbers

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• 06:30

### When To Try New Things (According to Math)

187 views / 0 likes - added

The Explore/Exploit Trade Off. The best algorithm for when to try new things and when to stick to what you know: the Gittins Index. Based on a chapter of the book Algorithms to Live By, The Computer Science of Human Decisions by Brian Christian and Tom Gr

• 01:45

### Renewable Energy - Powered by Poop | California Academy of Sciences

341 views / 0 likes - added

In this Flipside Science unit, designed for a middle school audience, we'll explore environmental issues related to energy use and conservation. In our most recent installment, find out how a dairy farm is using a methane digester to turn cow poop into el

• 10:06

### Universal Basic Income Explained – Free Money for Everybody? UBI

166 views / 0 likes - added

What is UBI? How would free money change our lives. Kurzgesagt Newsletter: http://eepurl.com/cRUQxz Support us on Patreon so we can make more videos (and get cool stuff in return): https://www.patreon.com/Kurzgesagt?ty=h Kurzgesagt merch: http://bit.ly/1P

• 06:29

### When To Quit (According to Math)

138 views / 1 likes - added

Optimal Stopping. The Secretary Problem Explained. Taken from a chapter of the book "Algorithms to Live By - The Computer Science of Human Decisions" by Brian Christian and Tom Griffiths Hi! I'm Jade. Subscribe to Up and Atom for new physics, math and com

• 12:47

### Math Antics - Mixed Numbers

324 views / 1 likes - added

In this re-make of our Mixed Numbers video, we take a more intuitive approach to converting between Mixed Numbers and Improper Fractions. You can still access the old version of the video here: https://www.youtube.com/watch?v=-55KA6kaXFY

• 06:02

### Math, When Are You Going To Use It?

155 views / 0 likes - added

If you're in or went to high school, you're familiar with the phrase "When am I ever going to use this?" when talking about pretty much anything you learn in math class. This is the answer to that question. The real answer, not something like "one day a s

• 04:30

### Where do math symbols come from? - John David Walters

310 views / 1 likes - added

Sign up for our newsletter here: https://ed.ted.com/newsletter View full lesson: https://ed.ted.com/lessons/where-do-math-symbols-come-from-john-david-walters Math is full of symbols: lines, dots, arrows, English letters, Greek letters, superscripts, subs

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• 02:09

### Teen Titans Go! | The Titans Academy Awards | Cartoon Network

376 views / 0 likes - added

Robin creates the Teen Titan Awards in an effort to get his teammates to clean up the Tower. CN GAMES: http://bit.ly/CNGames SUBSCRIBE: http://bit.ly/109Y6wq WATCH MORE: http://bit.ly/VgnfHu About Teen Titans GO!: TEEN TITANS GO! is a comedy featuring the

• 10:22

### Elon Musk's Basic Economics

207 views / 0 likes - added

Elon Musk, the founder of Tesla and SpaceX has a very insightful view of economics. Animation by Josh Sherrington (https://www.youtube.com/heliosphere) Sound by Graham Haerther (http://www.Haerther.net) Thumbnail by Joe Cieplinski (http://joecieplinski.co

• 19:37

### Smart Math Techniques - Solve maths problems in seconds

311 views / 0 likes - added

Topic In this topic our expert trainer Shruti explains how to solve difficult maths problems in a matter of seconds. OBJECTIVE To enable you to to do faster calculation using best speed maths techniques and make you score more in your exams. These speed m

• 13:24

### Basic Linear Functions - Math Antics

384 views / 0 likes - added

Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 08:26

### Conjugate acid-base pairs | Acids and bases | Chemistry | Khan Academy

203 views / 0 likes - added

Introduction to conjugate acid-base pairs. Definition and examples of conjugate acid-base pairs. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivit

• 07:57

### Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy

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A worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. Example includes changes in reaction vessel volume, changing amount of solid product, adding inert gas, and adding a catalyst. Chemistry

• 07:37

### Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan Academy

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Introduction to the reaction quotient Qc, and how to use the reaction quotient to predict how the reaction concentrations will change. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its

• 11:47

### Bond enthalpy and enthalpy of reaction | Chemistry | Khan Academy

185 views / 0 likes - added

Introduction to bond enthalpy, and how to use bond enthalpies to calculate enthalpy of reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/2015-ap-chemistry-free-response-7?utm_s

• 07:14

### Calculating internal energy and work example | Chemistry | Khan Academy

201 views / 0 likes - added

Worked example calculating the change in internal energy for a gas using the first law of thermodynamics. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/internal-energy-sal/v/specific-heat-and-latent-leat-of-

• 05:53

### Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan Academy

176 views / 0 likes - added

A worked example using reaction quotient Q to predict how concentrations will shift so the reaction can get to equilibrium. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acids-and-bases-topic/acids-and-bases/v/arrhenius-definition-o

• 07:33

### Ways to get a buffer solution | Chemistry | Khan Academy

161 views / 0 likes - added

Describes the two main situations where you get a buffer: making a buffer for a specific pH by combining a weak acid and a salt containing the conjugate base, and using a neutralization reaction by combining a weak acid and a strong base. Watch the next l

• 06:13

### Rate constant k from half-life example | Knetics | Chemistry | Khan Academy

158 views / 0 likes - added

Example problem showing how to find the rate constant k from the half-life of a first order reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/copy-of-kinetics/v/second-order-reaction-with-calculus?utm_source=YT&u

• 07:50

### pH and pKa relationship for buffers | Chemistry | Khan Academy

371 views / 0 likes - added

How the Henderson-Hasselbalch equation can be used to look at the ratio of conjugate acid and base using relationship between buffer pH and pKa. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/

• 06:47

### Noble gas configuration

175 views / 0 likes - added

How to write electron configurations for atoms and monatomic ions using noble gas configuration Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity

• 07:45

### Introduction to chemistry

172 views / 0 likes - added

A big picture intro to chemistry and why it is fascinating. Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a fir

• 38:29

### Khan Academy Live: SAT Reading Class

253 views / 0 likes - added

Need help with SAT reading? Join Eric, one of Khan Academy’s SAT experts, for an SAT reading class. During class, Eric explains a proactive approach to answering reading questions and walks through some of the most common types of questions. This is an ed

• 1:02:11

### Khan Academy Live: SAT Writing Class

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Need help with SAT writing? Join Eric, one of Khan Academy’s SAT experts, for an SAT writing class. Eric walks through key grammar concepts like subject-verb agreement and sentence punctuation. This is an edited version of our livestream from March 9, 201

• 1:10:07

### Khan Academy Live: AP Calculus

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Taking AP Calculus? Prep for the exam with our free live tutoring session. Dave, one of our calculus experts, will review key concepts, solve sample questions, and share ways to avoid common mistakes. Prep for your AP Calculus exams on Khan Academy: https

• 1:02:43

### Khan Academy Live: AP US History

232 views / 0 likes - added

Taking AP US History? Prep for the AP exam with our free live tutoring session. Kim, our history expert, will share tips and strategies for the exam. Study for AP US History on Khan Academy: https://www.khanacademy.org/humanities/us-history/ap-us-history

• 48:26

### Khan Academy Live: SAT Math

310 views / 0 likes - added

Need help with SAT math? Join Eric, one of Khan Academy’s SAT experts, for an SAT math class. Eric reviews some of the most important math skills for the test and provides tips on how to avoid careless mistakes. This is a recording of our May 16 livestrea

• 51:15

### Khan Academy Live: SAT Writing

207 views / 0 likes - added

Need help with SAT writing? Join Eric, one of Khan Academy’s SAT experts, for a live SAT writing class Tuesday, May 30 at 7 pm ET/4pm PT. It’s free! Eric will walk through key grammar concepts like subject-verb agreement and sentence punctuation. Can’t ma

• 05:43

### Under- and overstatement | Style | Grammar

153 views / 0 likes - added

This is, bar none, the greatest video Khan Academy has ever made, although I may be slightly overstating that. Learn how to master this style by following along.

• 05:05

### Parallel structure | Syntax | Khan Academy

221 views / 0 likes - added

Parallel structure isn’t a set rule, but more of a stylistic choice: it helps sentence elements maintain a pattern. This is a very special episode because it’s Paige’s last video with us as a KA intern! We will miss having Paige as a contributor to the Gr

• 04:44

### Relative clauses | Syntax | Khan Academy

211 views / 0 likes - added

A relative pronoun is a word like “that” or “which” or “who”, so a relative clause is a clause that begins with a relative pronoun. In the sentence “The dragon who breathed blue fire has retired,” “who breathed blue fire” is a relative clause. Learn more

• 07:04

### Dependent and independent clauses | Syntax | Khan Academy

247 views / 0 likes - added

Independent clauses can stand on their own as sentences, but dependent clauses can’t. We’ll take a closer look at what this means. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/dependent-and-independent-clauses Wat

• 05:57

### Phrases and clauses | Syntax | Khan Academy

237 views / 0 likes - added

A phrase is any collection of words that behaves like a part of speech, like a noun phrase (“my brother Stu”), an adjectival phrase (“in a different shade of blue”), or an adverbial phrase (“with elegance and tact”). A clause is any noun phrase plus a ver

• 04:19

### Dangling modifiers | Syntax | Khan Academy

208 views / 0 likes - added

A modifying word or phrase “dangles” when it doesn’t apply to the word it’s supposed to modify. Learn how to spot and fix this problem! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/dangling-modifiers/ Watch the ne

• 04:43

### Subject, direct object, and indirect object | Syntax | Khan Academy

170 views / 0 likes - added

A subject is the noun phrase that drives the action of a sentence; in the sentence “Jake ate cereal,” Jake is the subject. The direct object is the thing that the subject acts upon, so in that last sentence, “cereal” is the direct object; it’s the thing J

• 02:34

### Subjects and predicates | Syntax | Khan Academy

167 views / 0 likes - added

A subject is the noun or pronoun-based part of a sentence, and a predicate is the verb-based part that the subject performs. Let’s explore how that works in context. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/id

• 04:38

### Run-ons and comma splices | Syntax | Khan Academy

180 views / 0 likes - added

A run-on sentence doesn’t separate any of its independent clauses with the punctuation that it needs, and a comma splice incorrectly separates two independent clauses with a comma, instead of a comma-and-coordinating-conjunction. Practice this yourself on

• 03:48

### Recognizing fragments | Syntax | Khan Academy

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A sentence fragment is a chunk of language that hasn’t made it all the way to being a working sentence; it might be missing a verb, or there might not be a subject. Learn how to turn a fragment into a sentence in this video! Practice this yourself on Khan

• 04:07

### Pronoun-antecedent agreement | Syntax | Khan Academy

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An antecedent is “the thing that came before”. When you use a pronoun, it’s standing in for a word you used previously—that’s the antecedent. Join us as we demonstrate how to make sure that your pronouns and antecedents match up with one another: that’s c

• 04:53

### Subject-verb agreement | Syntax | Khan Academy

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Agreement is the art of making sure that sentence parts agree with one another; you want to make sure that your subjects and verbs match up. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/syntax/e/subject-verb-agreement Watc

• 04:14

### Compound-complex sentences | Syntax | Khan Academy

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Compound-complex sentences are compound sentences with dependent or subordinate clauses added to them. Paige and Rosie explain how to spot and use them. Practice this yourself on Khan Academy right now www.khanacademy.org/syntax/e/complex-and-compound-com

• 05:07

### Complex sentences | Syntax | Khan Academy

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Complex sentences are simple sentences with dependent or subordinate clauses added to them. Paige and Rosie explain how to spot them and use them in this video. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/syntax/v/compound-comple

• 04:29

### Simple and compound sentences | Syntax | Khan Academy

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A simple sentence contains one independent clause. A compound sentence contains more than one! Put another way: a simple sentence contains a subject and a predicate, but a compound sentence contains more than one subject and more than one predicate. Pract

• 02:50

### Exclamations | Syntax | Khan Academy

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An exclamation is a sentence that expresses great emotion! David and Paige covered declarative, interrogative, and imperative sentences; now they tackle a fourth type of sentence that ends in an exclamation mark. Find out more! Watch the next lesson: http

• 03:32

### Three types of sentence | Syntax | Khan Academy

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Three essential types of sentence are declarative sentences (which are statements), interrogative sentences (which are questions), and imperative sentences (which are orders). Join us as we give examples of each! Practice this yourself on Khan Academy rig

• 04:34

### What is a sentence? | Syntax | Khan Academy

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A sentence is a grammatically complete idea. All sentences have a noun or pronoun component called the subject, and a verb part called the predicate. David and Paige explore this division across several different example sentences. Watch the next lesson:

• 02:54

### BONUS: "FANBOYS," a mnemonic song | Conjunctions | Parts of speech| Khan Academy

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FANBOYS" is a mnemonic device you can use to help remember the coordinating conjunctions of English. Team Grammar made this video, figuring that we couldn't very well cover conjunctions without writing a song, now could we? If you're moved to make your ow

• 05:12

### Ellipses | Punctuation | Khan Academy

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Ellipses are three little dots that we use to show a pause or that a portion of a quote has been removed. Learn how to use them in this video. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/introd

• 04:09

### Parentheses | Punctuation | Khan Academy

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Parentheses set off extra information (such as a writer's remarks, an interruption, or a reference) from the rest of a sentence. Learn how to use them in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneo

• 04:51

### Hyphens vs. dashes | Punctuation | Khan Academy

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Hyphens and dashes look pretty similar, but their uses are very different! Learn when to use each one in this video. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/dashes-and-hyphens Watch the nex

• 06:20

### Dashes | Punctuation | Khan Academy

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Dashes are like little actors—they can behave like colons, pairs of commas, or parentheses. Learn how to use them in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/introduction-to-the-

• 03:13

### Using quotation marks in titles | Punctuation | Khan Academy

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Learn how to use quotation marks to title things like poems, songs, and episodes of TV shows. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/italics--underlines--and-quotes/ Watch the next lesson:

• 04:18

### How to use italics and underlines | Punctuation | Khan Academy

192 views / 0 likes - added

Learn how to use italics and underlines when writing the titles of works or when emphasizing a particular word or phrase. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/miscellaneous-punctuation/e/italics--underlines--and-qu

• 10:57

### BONUS: History of the possessive apostrophe | The Apostrophe | Punctuation | Khan Academy

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David, Paige, and Jake cover the fascinating history of the possessive apostrophe. Stay tuned for this bonus video! Missed the previous lesson? Watch here: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe/v/bonus-history-of-the-ap

• 05:40

### BONUS: History of the apostrophe | The Apostrophe | Punctuation | Khan Academy

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The apostrophe has a bizarre history, including being the name for something that's not really related to grammar at all. David, Paige, and special guest Jake explain. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-a

• 02:31

### Choosing between its and it’s | The Apostrophe | Punctuation | Khan Academy

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David and Paige explain the meaning of two English words that look and sound very similar but act very different: _its_ and _it's_. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe

• 02:51

### Apostrophes and plurals | The Apostrophe | Punctuation | Khan Academy

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There is *one* extremely rare case in which we use apostrophes to make things plural. David and Paige, KA's resident grammarians, discuss this unusual case. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/p

• 04:11

### Advanced (plural) possession | The Apostrophe | Punctuation | Khan Academy

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Paige and David talk about using apostrophes to show that something belongs to multiple people. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-apostrophe/e/advanved--plural--possesion Watch

• 01:51

### Possession for words ending in “s” | The Apostrophe | Punctuation | Khan Academy

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Do words that end in "s" still need _'s_ to show possession? David and Paige explain! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/introduction-to-the-possessive-case Watch the next lesson: https://www.kha

• 03:45

### Introduction to the possessive | The Apostrophe | Punctuation | Khan Academy

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Apostrophes can help show when something belongs to someone. Paige and David explain how! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/introduction-to-the-possessive-case Watch the next lesson: https://www

• 03:36

### Introduction to contractions | The Apostrophe | Punctuation | Khan Academy

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Apostrophes are great at standing in for missing letters, allowing us to shorten words. Paige and David discuss contractions and the Principle of Least Effort. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-apostrophe/e/

• 04:50

### Introduction to the apostrophe | The Apostrophe | Punctuation | Khan Academy

246 views / 0 likes - added

David and Paige, KA’s resident grammarians, introduce a new piece of punctuation: the apostrophe! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-comma/e/introduction-to-the-apostrophe Watch the next lesson: https://www.k

• 03:43

### BONUS: The Oxford comma | Punctuation | Grammar | Khan Academy

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David and Paige tackle the great comma debate of our time: Oxford comma or no Oxford comma? Missed the previous lesson? https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/appositives-the-comma-punctuation-khan-academy?utm_source=YT&utm

• 03:00

### Appositives | Punctuation | Grammar | Khan Academy

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David and Paige, KA’s resident grammarians, cover appositives and how to use commas along with them. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/appositives?utm_source=YT&utm_med

• 03:00

### Commas in dialogue | Punctuation | Grammar | Khan Academy

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“Today we’re going to talk about using commas in dialogue,” said David and Paige, KA’s resident grammarians. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/commas-in-dialogue?utm_so

• 03:24

### More uses for commas | Punctuation | Grammar | Khan Academy

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David and Paige, KA’s resident grammarians, discuss tag questions, yes and no statements, and direct address -- all situations where the comma is super useful. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/c

• 01:51

### Punctuating a list | Punctuation | Grammar | Khan Academy

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Learn how to use commas to punctuate a written list of people, things, actions, or events. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/punctuating-lists?utm_source=YT&utm_medium=

• 04:35

### Commas and introductory elements | Punctuation | Grammar | Khan Academy

186 views / 0 likes - added

In English, you use commas to separate introductory elements from the rest of a sentence. Find out how with David and Paige! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/commas-an

• 03:19

### Commas in space and time | The Comma | Punctuation | Khan Academy

190 views / 0 likes - added

Learn how to use commas when writing addresses (in space) and dates (in time). Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/e/salutations--valedictions--dates--and-addresses Watch t

• 02:18

### Salutations and valedictions | Punctuation | Grammar | Khan Academy

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David and Paige, KA’s resident grammarians, talk about how to address and sign off on letters using commas! Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/v/commas-in-space-and-time-the-comma-punctuation-khan-a

• 03:59

### Meet the Comma | Punctuation | Grammar | Khan Academy

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David and Paige introduce you to the superhero of the punctuation world: the comma! Practice this yourself on Khan Academy right now: . Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/punctuation/the-comma/

• 02:52

### Three ways to end a sentence | Punctuation | Khan Academy

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David and Paige, KA’s resident grammarians, introduce the three ways to end a sentence: the period, the exclamation point, and the question mark. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-comma/e/three-ways-to-end-a

• 06:08

### Beginning sentences with conjunctions | The parts of speech | Grammar | Khan Academy

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Is it okay to begin a sentence with a conjunction like "but" or "because"? Yes. David explains why. Missed the previous lesson? https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/v/correlative-conjunctions?utm_source=YT&utm_medium=D

• 03:12

### Correlative conjunctions | The parts of speech | Grammar | Khan Academy

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Correlative conjunctions work in pairs to connect parts of sentences. David teaches you how they do it! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/correlative-conjuntions?u

• 05:27

### Subordinating conjunctions | The parts of speech | Grammar | Khan Academy

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Subordinating conjunctions join two parts of complex sentences––independent clauses to dependent clauses. David explains how. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/coo

• 04:33

### Coordinating conjunctions | The parts of speech | Grammar | Khan Academy

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Coordinating conjunctions connect parts of sentences to each other. David explains how. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/conjunctions/e/meet-the-conjunction?utm_source=YT&utm_me

• 03:50

201 views / 0 likes - added

When using more than one adjective, sometimes you put a comma between them and sometimes you don't. Learn how to tell when you need a comma in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-modifier/e/commas-

• 09:03

### BONUS VIDEO | Singular They | The parts of speech | Grammar | Khan Academy

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You may have been hearing a lot about the "singular they" recently. But what is it? How does it work, what is its history, and is it grammatical? Let's find out. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-modif

• 02:55

### Emphatic pronouns | The parts of speech | Grammar | Khan Academy

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Sometimes we use reflexive pronouns like "myself" and "ourselves" for emphasis in a sentence, like, "If you won't help me, then I'll do it myself!" KA's Grammar Fellow, David, explains this usage. Practice this yourself on Khan Academy right now: https://

• 05:03

### Indefinite Pronouns | The parts of speech | Grammar | Khan Academy

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David, Khan Academy's Grammar Fellow, covers three nifty features of indefinite pronouns, which are pronouns that are just a little vague, y'know? Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspee

• 05:18

### Pronoun number | The parts of speech | Grammar | Khan Academy

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The difference between something being singular or plural is what we call 'grammatical number' in English. Here's how that idea applies to pronouns! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofsp

• 04:39

### Grammatical person and pronouns | The parts of speech | Grammar | Khan Academy

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There's this idea in grammar called grammatical person that helps describe who's being talked about in a sentence. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/parts

• 05:34

### Subject and object pronouns | The parts of speech | Grammar | Khan Academy

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Before we get any further with pronouns, let's cover what the difference between a subject and an object pronoun is, because the distinction between those two concepts will start coming up a good deal. Practice this yourself on Khan Academy right now: htt

• 04:47

### Who versus whom | The parts of speech | Grammar | Khan Academy

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When do you use who, and when do you use whom? David, KA's grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/relative-pronouns?utm_source=YT&utm_medium=Desc&u

• 05:41

### That versus which | The parts of speech | Grammar | Khan Academy

198 views / 0 likes - added

Much has been made of the distinction between "that" and "which" in English, but it can mostly be summed up in two points: 1. "That" doesn't work so well with commas. 2. "Which" doesn't work so well with people. David the Grammarian explains. Watch the ne

• 01:56

### Relative pronouns | The parts of speech | Grammar | Khan Academy

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We use the relative pronouns to connect clauses together, like "the man *who sold the world* is coming over for dinner." David, KA's Grammar Fellow, explains. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/

• 05:10

### Reflexive pronouns | The parts of speech | Grammar | Khan Academy

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We use reflexive pronouns (like "herself" and "ourselves") when the subject and the object of a sentence are the same thing. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/gra

• 04:52

### Possessive pronouns | The parts of speech | Grammar | Khan Academy

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We can use pronouns to show possession relationships, describing what things belong to which people, like "her shoe" or "the book is mine." Possessive pronouns come in two flavors: adjective and noun! David, KA's resident grammarian, covers the difference

• 03:15

### Personal pronouns | The parts of speech | Grammar | Khan Academy

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Let's meet the personal pronouns! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/meet-the-personal-pronoun?utm_source=YT&utm_medium=Desc&utm_campaign=grammar Watch the next less

• 02:00

### What is a pronoun? | The parts of speech | Grammar | Khan Academy

188 views / 0 likes - added

Pronouns are words that can replace nouns, like the way "it" replaces "elephant" in "I looked at the elephant. It was grey." Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/the-pronoun/e/the-q

• 04:53

### Modal verbs | The parts of speech | Grammar | Khan Academy

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There's a class of helper verbs known as modals that we use to express a bunch of conditions: we can use them to give advice, make guesses at how necessary or likely something is, make requests of people, and so on. They're super useful. Practice this you

• 02:11

### Perfect progressive aspect | The parts of speech | Grammar | Khan Academy

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We use the perfect progressive aspect to talk about an action that was once ongoing, but has since completed, like "I had been waiting for twenty minutes." Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/pa

• 02:31

### Perfect Aspect | The parts of speech | Grammar | Khan Academy

194 views / 0 likes - added

If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

• 02:45

### Progressive Aspect | The parts of speech | Grammar | Khan Academy

207 views / 0 likes - added

If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

• 01:32

### Simple Aspect | The parts of speech | Grammar | Khan Academy

193 views / 0 likes - added

If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

• 01:50

### Introduction to verb aspect | The parts of speech | Grammar | Khan Academy

210 views / 0 likes - added

If verb tense allows you to control the past, the present, and the future, then aspect gives you even finer control over time. David, Khan Academy's resident grammarian, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.o

• 02:53

### The truly irregular verbs | The parts of speech | Grammar | Khan Academy

183 views / 0 likes - added

Some irregular verbs just won't be categorized. They don't fit into neat little boxes. These are those verbs. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/e/intro-to-irregular

• 03:14

### The irregular verb gets taken for a ride | Grammar | Khan Academy

201 views / 0 likes - added

This group of irregular verbs have vowel sounds that change in a predictable way, when they go from the present to the past tense. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs

• 03:11

### The vowel-shift irregular verb | The parts of speech | Grammar | Khan Academy

193 views / 0 likes - added

This group of irregular verbs have vowel sounds that change in a predictable way, when they go from the present to the past tense. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs

• 01:53

### The funky -ed irregular verb | The parts of speech | Grammar | Khan Academy

207 views / 0 likes - added

These are the most regular of the irregular verbs; while they don't behave exactly like regular verbs, like present tense "walk" become past tense "walked", they do maintain the "-ed" sound. It's just spelled differently. Practice this yourself on Khan Ac

• 03:29

### Introduction to irregular verbs | The parts of speech | Grammar | Khan Academy

216 views / 0 likes - added

Words like "walk" and "look" are regular verbs – they behave in a predictable way. But there's a whole class of words in English, called irregular verbs, that are harder to predict. David, KA's Grammar Fellow, explains. Practice this yourself on Khan Acad

• 03:02

### Linking verbs | The parts of speech | Grammar | Khan Academy

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In a previous video, we established that one thing verbs can do is show actions, like "the bear runs." Verbs can also link ideas to one another, like "the bear looks cheerful." Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofs

• 02:54

### Helping verbs | The parts of speech | Grammar | Khan Academy

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We've established that verbs can show actions and link ideas together. Now, let's talk about how some verbs can be used to help other verbs. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/gra

• 02:50

### The future tense | The parts of speech | Grammar | Khan Academy

218 views / 0 likes - added

When you want to talk about the future in English, you use the future tense. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/linking-verbs-the-parts-of-speech-grammar?utm_source=YT&utm_medium=Desc&utm_ca

• 02:00

### The past tense | The parts of speech | Grammar | Khan Academy

225 views / 0 likes - added

When you want to talk about events that have already happened, you use the past tense. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/the-future-tense-verbs-the-parts-of-speech?utm_source=YT&utm_medium=

• 02:01

### The present tense | The parts of speech | Grammar | Khan Academy

200 views / 0 likes - added

How do we talk about things that are happening right now? Watch the next lesson: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/v/the-past-tense-verbs-the-parts-of-speech?utm_source=YT&utm_medium=Desc&utm_campaign=grammar Misse

• 01:46

### Introduction to verb tense | The parts of speech | Grammar | Khan Academy

203 views / 0 likes - added

An understanding of verb tense will make you into a TIME WIZARD, with the ability to control the past, the present, and the future – with your words, anyway. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/

• 01:26

### Introduction to verbs | The parts of speech | Grammar | Khan Academy

216 views / 0 likes - added

Let's explore what verbs are, and what they do! David, KA's Grammar Fellow, explains. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/humanities/grammar/partsofspeech/grammar-verbs/e/identifying-verbs?utm_source=YT&utm_medium

• 04:57

### Irregular plural nouns | foreign plurals | The parts of speech | Grammar | Khan Academy

232 views / 0 likes - added

You don't need to know how to speak Latin and Greek in order to understand English, but some words in English come from those languages. It's helpful to know how some Greek and Latin words change from singular to plural. Practice this yourself on Khan Aca

• 02:46

### Introduction to Grammar | Grammar | Khan Academy

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Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language, its rules, and its conventions. By understanding English – by speaking it, by writing it, by reading this very sentence – you are a grammarian yourself! Wa

• 02:10

### Prime Numbers Song with Composite & Square Numbers | Math Rap for Kids

344 views / 0 likes - added

NUMBEROCK DIGITAL LIBRARY: https://www.teacherspayteachers.com/Product/Math-Worksheets-More-NUMBEROCK-Musical-Math-Workbook-and-Activities-2200780 ◀ Safe Link NUMBEROCK DVD Links Below: NUMBEROCK 3rd Grade Math DVD: https://www.amazon.com/NUMBEROCK-3rd-Gr

• 13:53

### Math vs Physics - Numberphile

221 views / 0 likes - added

Robbert Dijkgraaf is a mathematical physicist. Extra footage from this interview: https://youtu.be/FpkvNJCVEUA More links & stuff in full description below ↓↓↓ Robbert Dijkgraaf website: http://www.robbertdijkgraaf.com Physics videos by Brady (who makes N

• 03:27

### Is This Where Humanity Decided to Settle Down?

171 views / 0 likes - added

Plant analysis of ancient wild cereals from Göbekli Tepe reveal a remarkable similarity to modern strains. This points to the possibility that humanity’s transition from hunting to farming may have begun there. From the Series: Secrets: Garden of Eden htt

• 04:33

### Can Math Prove God's Existence?

392 views / 0 likes - added

Can math stop the debate over God's Existence? Get a FREE Audible Trial: http://audible.com/asap GET THE ASAPSCIENCE BOOK: http://asapscience.com/book/ Created by: Mitchell Moffit and Gregory Brown Written by: Mitchell Moffit, Gregory Brown and Rachel Sal

• 12:55

### Math Antics - The Pythagorean Theorem

557 views / 0 likes - added

Learn more at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

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• 04:20

### Cool Math! "This Old Man" - Behind the Music

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It's time for cool math for kids at Cool School with "This Old Man!" Learn to count with this fun nursery rhyme and a super awesome math song by Mr. R! Here's Mr. R's version of "This Old Man" where you can learn to count by tens! https://www.youtube.com/

• 04:22

### Calculus Limits - Factoring Example

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Learning Calculus limits is a breeze with this tutorial and video example.. This example teaches you how to solve limits by factoring. Check out my Calculus limits playlist if you want some harder examples. I also offer live tutoring if you need any extra

• 05:04

### Area of a Triangle - Fun challenging math problem

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Can you solve the area of a triangle given points X and Y. This is not a basic problem, but it is a fun and challenging math problem. See if you are smart enough to find the area of a triangle for yourself. My name is Chris and my passion is to teach math

• 04:32

### Math Word problems - Solving triangles

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Become an expert in solving math word problems! In this problem you will learn how to use triangles to solve the height of a building. A man steps back 50 feet which the angle to the top of the building change 15 degrees. Using this information find the h

• 04:30

### Calculus Limits - Easy Problem and Introduction

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Learning Calculus limits is a breeze with this problem and introduction. This example is an easy problem. Check out my Calculus limits playlist if you want some harder examples. I also offer live tutoring if you need any extra help. Check out my website i

• 04:37

### Why do people get so anxious about math? - Orly Rubinsten

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View full lesson: http://ed.ted.com/lessons/why-do-people-get-so-anxious-about-math-orly-rubinsten Have you ever sat down to take a math test and immediately felt your heart beat faster and your palms start to sweat? This is called math anxiety, and if it

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• 02:33

### The Academy Where Butlers Are Born

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Learning to serve as a certified butler is both a skill and an art, and the world’s most elite butlers come from one place: The International Butler Academy in Simpelveld, Netherlands. Here, students spend 10 weeks in intensive training, living and workin

• 03:59

### Vectors and Scalars - Physics

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Learn the difference between vectors and scalars in this simple tutorial. Vectors have direction while scalars do not. You will be a physics expert in no time. My name is Chris and my passion is to teach math. Learning should never be a struggle which is

• 01:51

### Test your math IQ - Part 1

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Test your math IQ with this fun question. There are two 12 sided coins. Find the measure of the angle when the coins are side by side. Each side of the coin is equal length. My name is Chris and my passion is to teach math. Learning should never be a stru

• 30:07

### Mind Bending Math: Riddles and Paradoxes

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Learn that determining the will of the voters can require a mathematician. Delve into paradoxical outcomes of elections at national, state, and even club levels. Study Kenneth Arrow’s Nobel prize-winning impossibility theorem, and assess the U.S. Electora

• 11:04 Popular

### Math Antics - Mean, Median and Mode

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Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 03:02 Popular

### Can you solve the never ending square root?

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This never ending square root can actually be solve using basic alegra. Find the exact value of this never square root. This problem is much easier than it looks. My name is Chris and my passion is to teach math. Learning should never be a struggle which

• 04:33

### Can you solve Zeno's paradox? - Brain Teaser

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Zeno's paradox is one of the most well know math puzzles in history. Is it possible to add an infinite amount of numbers and get an exact value? This is one example of Zeno's paradox. Try and solve this paradox and learn about the Greek philosopher Zeno i

• 05:16

### Math - Summer of STEM - Spirolateral Math Art and Transforming Ninja Stars

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Math! This week we make transforming geometric ninja stars and spirolateral math art. Math Book: https://drive.google.com/file/d/0B-GbYsz_QH2WN2gwTTFXU0pLNGM/view?usp=sharing Spirolateral Sheet: https://drive.google.com/file/d/0B-GbYsz_QH2WaVFJNFJCZDRIcms

• 02:09

### Test your math IQ - Part 2

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Test your math IQ with this fun question. There are ten green socks and 10 blue socks in a basket. You can not see a thing. How many socks would you need to take out of the basket to ensure you had a least a pair? My name is Chris and my passion is to tea

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• 05:24

### Math Challenge - Shrinking Pool Problem

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Think you can solve this math challenge? Every time a boy jumps into the pool it shrinks by a certain amount. Thy boy jumps into the pool 3 times. You must find the original length of the pool My name is Chris and my passion is to teach math. Learning sho

• 08:27

### Math Tricks and the Joy of Math I The Great Courses

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Try a free month trial of The Great Courses Plus and watch Joy of Mathematics here: https://www.thegreatcoursesplus.com/special-offer?utm_source=US_OnlineVideo&utm_medium=SocialMediaEditorialYouTube&utm_campaign=136229 Welcome to the Joy of Math. I'm Arth

• 04:46

### Physics of toys-wooden air engine // Homemade Science with Bruce Yeany

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The basic concept of a reciprocating engine goes back about 300 years when first developed into a crude stream engine. the same basic principles are used in today's modern engine where expanding gas is used to drive a piston and a crank is used to convert

• 06:48

### Physics of toys - Simple air engines // Homemade Science with Bruce Yeany

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Sometimes referred to as a blow-suck engine, here is the most basic piece that is an easy build and popular with students. It can be varied according building skills and available materials. The same basic principles that drive this motor are used in toda

• 02:58

### Wooden levers challenge, Wood balancing puzzle // Homemade Science with Bruce Yeany

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In our study of simple machines, we take a look at types of levers and situations where the torques applied to them are equal allowing objects to be balanced. Here is a simple set of blocks that can be used to challenge student's understanding and their m

• 05:00

### Why do airlines sell too many tickets? - Nina Klietsch

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View full lesson on ed.ted.com: http://ed.ted.com/lessons/why-do-airlines-sell-too-many-tickets-nina-klietsch Have you ever sat in a doctor’s office for hours, despite having an appointment? Has a hotel turned down your reservation because it’s full? Have

• 02:31

### The Math Behind the Polls

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When polls try to tease out what a group of people is thinking, what are they measuring and how can they go wrong?

• 11:34

### Algebra Basics: What Are Functions? - Math Antics

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Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 07:20

### 5 cool math tricks ft. Technicality

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Math can be fun when you play with the rules, use it to do everyday things like fast math for calculating tips, and do some math magic tricks! Plus, math is the language of physics. Check out these 5 fun math tricks with Alex from Technicality. Check out

• 04:30

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"If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p

• 02:26

### Math Puts a New Twist on Solving a Rubik's Cube with the Fewest Moves

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For this puzzle with over 43 quintillion permutations, author Ian Scheffler explains how players have found the most efficient route to resolving a Rubik’s cube.

• 03:37

### Sal teaches Grover about the electoral college

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Sal helps our favorite Sesame Street character understand how we elect the president of the United States. Check out more lessons about American civics on Khan Academy at http://www.khanacademy.org. And vote November 8 if you’re eligible!

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• 10:14

### Algebra Basics: Graphing On The Coordinate Plane - Math Antics

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Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

• 02:21

### Trick Question - Test your math skills

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Find the maximum and minimum values of X in this trick question. Each value of X must satisfy the given inequality. Test your math skills and have fun with this trick question. My name is Chris and my passion is to teach math. Learning should never be a s

• 02:46 Popular

### 7 Times Table Song For Kids | Multiplication Math Video | NUMBEROCK |

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Best of NUMBEROCK - 7 Times Table Song For Kids 1. Get Our Multiplication Tables Unit \$̶9̶.̶9̶9̶ \$4.95 ▶ https://www.teacherspayteachers.com/Product/Skip-Counting-By-6-7-8-and-9-Songs-with-Music-Videos-Worksheets-Drills-2721314 ◀ Safe Link 2. BUY EVERYTHI

• 04:04

### Can Math Explain How Animals Get Their Patterns?

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How Alan Turing's Reaction-Diffusion Model Simulates Patterns in Nature Thanks to http://www.audible.com/minuteearth for sponsoring this video. Asparagus Pee Survey Results: https://goo.gl/8x7abL ___________________________________________ If you liked th

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